61473147 has 4 divisors (see below), whose sum is σ = 81964200. Its totient is φ = 40982096.

The previous prime is 61473143. The next prime is 61473161. The reversal of 61473147 is 74137416.

61473147 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 61473147 - 2² = 61473143 is a prime.

It is not an unprimeable number, because it can be changed into a prime (61473143) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10245522 + ... + 10245527.

It is an arithmetic number, because the mean of its divisors is an integer number (20491050).

Almost surely, 2^61473147 is an apocalyptic number.

61473147 is a deficient number, since it is larger than the sum of its proper divisors (20491053).

61473147 is a wasteful number, since it uses less digits than its factorization.

61473147 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20491052.

The product of its digits is 14112, while the sum is 33.

The square root of 61473147 is about 7840.4812990020. The cubic root of 61473147 is about 394.6648805344.

The spelling of 61473147 in words is "sixty-one million, four hundred seventy-three thousand, one hundred forty-seven".